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The MX-A5000's high-quality construction features a massive toroidal power transformer and a symmetrical layout to isolate left- and right-channel circuitry for low noise and wide open sound for outstanding stereo sound from this multichannel amp.

Feed your speakers the good stuff

Powering 11 speakers in a home theater is one thing. Making them all sound exquisite is quite another. That's why Yamaha left no detail unattended in designing the MX-A5000 power amplifier. Rated at a hefty 150 watts per channel in stereo mode, there's plenty of clean power to go around to drive an earth-shattering 11.2-channel surround sound system.

XLR inputs with 5-channel bi-amping

Connect your preamp to this powerhouse with either unbalanced RCA cables or pro-quality balanced XLR cables. XLR connections provide an ultra low-noise signal, so all those details in your favorite songs or movie soundtracks come through clearly. If you have a 5-channel home theater with biamp-capable speakers, you can obtain greater transparency and detail through bi-amping all five speakers.

More than just raw power

A high quality power amp is all about...you guessed it: power. The MX-A5000 is built around a massive toroidal power transformer, offering up the steady stream of clean power any good amp relies upon to drive your speakers to sonic heights.

Independent symmetrical construction separates the left from the right channel circuitry, to preserve a clean signal path that improves the signal-to-noise ratio as well as widens the soundstage for exceptional 2-channel listening. The rigid chassis features a thick double bottom with steel vibration-control plates to keep this amp rock solid even during high output levels. And the current feedback design is highly responsive to changes in volume, so it can accurately keep up with explosive movie soundtracks or highly dynamic music. Weighing in at 56 pounds, you can be sure Yamaha didn't take any shortcuts when designing this heavyweight amp.

Need a multichannel preamp/processor to pair with this power amp? Check out the Yamaha CX-A5000.

Symmetrical Power Amplifier Layout: The interior of the power
amplifier has been precisely planned, circuit-routed and built so that the left
and right channels are physically and electrically isolated. This naturally
maximizes channel separation, but also greatly improves signal to noise ratio
and also helps to achieve a wide, open sound stage.

Current Feedback Amp + 3-Stage Darlington Circuitry: The MX-A5000 uses a current feedback
power amp with a three stage Darlington circuit that has superior phase
properties and is resistant to speaker impedance fluctuation. To fully realize
its inherent power, it uses high quality parts with superior sound quality that
were strictly selected based on listening tests.

Power Rating: The Yamaha MX-A5000 is equipped with a 11 channel
amplifier rated at 150 watts (into 8-ohms, at 20-20kHz, with 0.06% THD,
driving 2 channels) which provides high dynamic power with low-impedance
drive capability.

Flexible Amplifier Configuration: The MX-A5000 power amp and
CX-A5000 preamplifier (sold separately) are designed to allow flexible
system configuration. Complementing their 11 channel output that maximizes
Cinema DSP HD3 performance and makes the most of the capabilities of your
speakers; they also support bi-amping for driving tweeter and woofer with
separate amps, and A/B speaker configuration. Furthermore, they allow bi-amping of all five channels using
the 11 internal channels. Extra amplifiers can be used to power multiple zones in
addition to the main room, letting you configure your system for music play
in a bedroom or kitchen. On the MX-A5000, you can switch all 11 channel
input jacks back and forth between balanced and unbalanced for each channel,
further increasing system flexibility.

Highly Rigid Chassis: The Yamaha Aventage MX-A5000 employs an advanced
chassis with strong rigidity. Its chassis stiffness is enhanced by an H-shaped
cross frame that boosts mechanical strength, by adopting aluminum side panels
that increase the stiffness of the housing and by a three-ply structure with
independent top cover and side panels. Any external vibration from the rack or
other sources is damped by heavy insulators. The A.R.T. (Anti-Resonance
Technology) Wedge in the center of the bottom cover acts as an additional
vibration countermeasure and firmly supports the internal circuits and delicate
parts. In addition, the MX-A5000 has a double bottom, consisting of vibration
control plates made of 1/8" thick black steel. In order to support the heavy
heat sinks and other parts, it has a left-right independent construction
strengthened by a rigid-frame structure. The bottom frame reduces the
transmission of vibration produced by the large power supply transformer and
heat sinks. It also incorporates a heavy insulator that blocks external
vibration.

Robust Power Supply: The power supply transformer is a specially
developed high output, high efficiency, large size toroidal transformer. With
two specially developed high capacity (27,000μF) block capacitors, it minimizes
energy loss and features power supply capacity with generous headroom. This
ensures sound capable of superior musical expression.

Balanced Connectivity: Electrical noise may be generated due to
connection with other AV components and even to the connection between them, as
well as from other sources of external noise. To ensure that the MX-A5000 and
CX-A5000 are not affected by this distortion, 11 balanced connections that are
highly noise resistant were used, the same type generally used in pro audio
equipment. Even the 11 RCA unbalanced connection uses a ground sensing transmission
method that achieves simple balanced transmission. And in cases such as that
where each channel with the XLR is used selectively, the impact of noise flowing
between the preamp and the chassis of the power amp is removed, minimizing sound
quality deterioration due to the connection.

Trigger Input/Output: The trigger function allows automatic power
synchronization with other components that support this function. Connecting
a preamplifier, for example, to the "Trigger In" jack turns the power on and
off together with the preamp. Connecting another component such as a
subwoofer to the "Trigger Out" jack syncs the power of that component to the
MX-A5000. In addition, the input from the "Trigger In" jack can be output in
a cascade connection to control the power of another component such as
another power amplifier.

Auto Power Standby: The MX-A5000 has an Auto Power Standby function
that will turn the power off after eight hours. It can be turned on and off via
a rear panel switch and will be overridden by the trigger function.

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Awesome 11 Channel Amp

This is a Great Amp to compliment the CX A5000 Pre-Amp. For 11 amps packed into one box, this is truly a 3D surround audiophiles dream!!

Pros:Balanced inputs, several bi-amp settings, easy to install.

Cons:Would have liked a bit more power for the Main and Center speakers. I actually have a second amp that I use for 250 watts/channel for the Main R&L and Center (they are Martin Logan Electrostatics).